It’s another very low tide this weekend, so if you’ve ever wondered what seastars eat, why barnacles stand on their heads and how moon snails lay their eggs, ask the Seattle Aquarium beach naturalists on hand at Golden Gardens and Carkeek Park from 11:30 a.m. to 2:30 p.m., Saturday and Sunday. If you can’t make it, they’ll be back again a final time this summer on Aug. 2.

Photo courtesy Marty Gordon.